281 Issue 1 - Service Manual - BX3
24
5.16 Three Slow Flashes - Ground Fault Lockout
Reason
•
Flame variation detected due to poor earth connection to chassis ground.
•
There has been a false flame that is detected during a power reset turning on and off.
•
There has been a false flame has gone away after an over heat condition has been
cleared.
Service Checklist
1. Check the earthing system.
2. Check the control board.
3. Check the flame sensor.
4. Check the gas valve.
5. Check the flame roll out switch.
6. Check the flame roll out switch loom.
